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ARTCC radar controller issued 10000' to the pilot, but wrote 9000' on the aircraft's flight progress strip.
| Attributes | |
| ACN | 175224 |
| Time | |
| Date | 199104 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : gad |
| State Reference | AL |
| Altitude | msl bound lower : 10000 msl bound upper : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : ads |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute airway : ztl |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 130 flight time total : 5000 flight time type : 3300 |
| ASRS Report | 175224 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | controller military : 21 flight time last 90 days : 250 flight time total : 8000 flight time type : 300 |
| ASRS Report | 174966 |
| Events | |
| Anomaly | non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
I was the PF departing gadsden airport. Birmingham departure had cleared us to 5000' and told us to contact ZTL on 133.8. My first officer (PNF) was making the required radio call to our company in gadsden, so I was handling ATC communication at the time. ZTL established radar contact with us at 5000' and cleared us to 10000'. I specifically remember verbatim my readback: 'light transport X cleared to 1-0, 10 thousand.' a few mins later while level at 10000', center queried us as to whether we had been clearance to 9000'. I answered back that I had understood and read back '1-0, 10 thousand.' he said he thought he had cleared us to 9000' and gave us a frequency change to another ZTL sector. That new controller a few mins later gave us a phone # to call concerning a possible pilot deviation. I positive as to my readback of '1-0, 10 thousand,' and that it was unquestioned at that time. I later called the center and they said the problem had been on their end with the controller clearing me to 10000', but writing 9000' on his strip while he was also working another aircraft in our vicinity.
Original NASA ASRS Text
Title: ARTCC RADAR CTLR ISSUED 10000' TO THE PLT, BUT WROTE 9000' ON THE ACFT'S FLT PROGRESS STRIP.
Narrative: I WAS THE PF DEPARTING GADSDEN ARPT. BIRMINGHAM DEP HAD CLRED US TO 5000' AND TOLD US TO CONTACT ZTL ON 133.8. MY F/O (PNF) WAS MAKING THE REQUIRED RADIO CALL TO OUR COMPANY IN GADSDEN, SO I WAS HANDLING ATC COM AT THE TIME. ZTL ESTABLISHED RADAR CONTACT WITH US AT 5000' AND CLRED US TO 10000'. I SPECIFICALLY REMEMBER VERBATIM MY READBACK: 'LTT X CLRED TO 1-0, 10 THOUSAND.' A FEW MINS LATER WHILE LEVEL AT 10000', CENTER QUERIED US AS TO WHETHER WE HAD BEEN CLRNC TO 9000'. I ANSWERED BACK THAT I HAD UNDERSTOOD AND READ BACK '1-0, 10 THOUSAND.' HE SAID HE THOUGHT HE HAD CLRED US TO 9000' AND GAVE US A FREQ CHANGE TO ANOTHER ZTL SECTOR. THAT NEW CTLR A FEW MINS LATER GAVE US A PHONE # TO CALL CONCERNING A POSSIBLE PLT DEVIATION. I POSITIVE AS TO MY READBACK OF '1-0, 10 THOUSAND,' AND THAT IT WAS UNQUESTIONED AT THAT TIME. I LATER CALLED THE CENTER AND THEY SAID THE PROB HAD BEEN ON THEIR END WITH THE CTLR CLRING ME TO 10000', BUT WRITING 9000' ON HIS STRIP WHILE HE WAS ALSO WORKING ANOTHER ACFT IN OUR VICINITY.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.